As anyone who follows our regular series of “Test Photo” features knows, we enjoy checking out pictures captured by unreleased phones. The holy grail of such a pursuit is, of course, tracking down an image from the next iPhone. And we think that we’ve found one.

This (very attractive) photo claims to have been taken by an iPhone 4, but the rest of its EXIF data tells a different story: although the image has been cropped to 2235×2291 (5.12 megapixels), the original picture was a much larger 3264×2448 — or just shy of eight megapixels. What’s more, the lens was recorded as a 4.3mm f/2.4, which is closer to that of a point-and-shoot than the iPhone 4′s actual 3.85mm f/2.8. (Remember that the upcoming HTC Runnymede is said to have an aperture of f/2.2.)

Now you may recall that we were recently tripped up by an image that seemed to have been captured by an unannounced iPad, but was actually taken by an iPhone and then uploaded by an iPad running software that altered the EXIF data. We suppose that a similar scenario is also possible here, but there’s one compelling piece of evidence which suggests that this is indeed a genuine iPhone 5 photo: it was supposedly shot by an Apple engineer eating his lunch at work.

Full EXIF data can be found in the original file, located here.